Locations: More than 6,400 locations throughout the United States, Canada and 20 other countries. Total Sales in the US: $3.2 billionLocations: Buffalo Wild Wings has more than 1,090 locations in the United States, Canada, Mexico, and Philippines, according to Market Watch. Total Sales in the US: $3.2 billionLocations: Little Caesars Pizza has more than 3,600 locations in the United States, according to Nation's Restaurant News. Total Sales in the US: $3.4 billionLocations: Chili's has 1,269 U.S. locations, according to Nation's Restaurant News. Total Sales in the US: $3.6 billionLocations: Olive Garden has more than 800 restaurants worldwide. Total Sales in the US: $3.8 billionLocations: Sonic has more than 3,500 restaurants in 44 states. Total Sales in the US: $4 billionLocations: Chipotle has more than 1,800 restaurants, including 17 Chipotle restaurants outside the US, according to a press release from June 2015. Total Sales in the US: $4.1 billionLocations: Domino's has 5,084 stores in the U.S., according to Real Money. Total Sales in the US: $4.1 billionLocations: KFC has more than 18,000 locations in 115 countries worldwide. Total Sales in the US: $4.2 billionLocations: Panera has around 1,541 locations in 42 states, the District of Columbia, and Canada, according to Markets Daily. Total Sales in the US: $4.3 billionLocations: Applebee's has around 2,011 restaurants in the United States, one United States territory and 15 foreign countries, according to Investor Newswire. Total Sales in the US: $4.6 billionLocations: Pizza Hut has more than 6,300 locations in the United States, according to The Christian Science Monitor. Total Sales in the US: $5.5 billionLocations: Chick-fil-A has approximately 2,000 locations in the United States, according to The Huffington Post. Total Sales in the US: $5.7 billionLocations: Dunkin' has more than 8,000 restaurants in 41 states and the District of Columbia. Total Sales in the US: $7.2 billionLocations: Taco Bell has around 6,000 locations in the U.S., according to Bloomberg. Total Sales in the US: $8.2 billionLocations: Wendy's had a total of 6,515 restaurants worldwide at the end of 2014, according to CNN Money. Total Sales in the US: $8.6 billionLocations: Burger King has more than 7,155 worldwide locations, according to Nation's Restaurant News. Total Sales in the US: $8.6 billionLocations: Subway has 27,049 stores in the United States. Total Sales in the US: $12.3 billionLocations: Starbucks has 12,233 locations in the United States. Total Sales in the US: $13 billionLocations: McDonald's has about 14,300 United States locations, according to The New York Times. Total Sales in the US: $35.4 billionNow check out the top 50 brands for millennials >